How to Make an Untraceable Phone Call

There is no guaranteed method for making a phone call that is completely untraceable. However, there are steps you can take to increase the privacy of a call and reduce the chances that a phone call can be traced back to you.
Instructions

1. If you want to hide your caller ID number from the recipient of your phone call, you can do so by pressing *67 before dialing the phone number of your recipient. Although your caller ID number will be hidden from the recipient of your phone call, the phone call can still be traced by automatic number identification (ANI; this is the service used by 800 & 900 numbers and 911 to identify callers). A call trace can also be initiated by the recipient if they press *57.
2. To reduce the chance of a call being traced and identified by ANI, you may want to use a softphone. A softphone is a computer program which uses the Internet to make phone calls. Once again, there is still a chance that you could be identified through a subpoena of the carrier and the release of your IP address (using a proxy server in conjunction with the softphone could add an additional measure to reduce the probability of your phone call being traced).
3. Disposable pre-paid cellphones and payphones are two other popular options for making phone calls that are hard to trace. However, keep in mind that while more secure than making a standard phone call, these methods are not flawless. Most payphones are monitored by security cameras, while the location of disposable pre-paid cellphones can be traced when they are turned on.